Actuating mechanism for oven-carriers.



PATENTED MAY 19, 1908. A. MILL & A. W. GOPLAND.

ACTUATING MECHANISM FOR OVEN CARRIERS. APPLICATION FILED JAN.31,1902

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' No. 887,828. PATENTED MAY 19, 1908.

A. MILL & A. W. OOPLAND. AGTUATING MECHANISM FOR OVEN CARRIERS.

APPLICATION FILED JAN. 31,1902.

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UNITED sTArwENr FICE.

ANTON MILL, OF CINCINNATI, OHIO, AND ALEXANDER W. GOPLAND, OF DETROIT,MICHIGAN; SAID MILL ASSIGNOR TO SAID COPLAND.

ACTUATING MECHANISM FOR OVEN-CARRIERS.

Application filed January 31, 1902.

Our invention relates to bakers ovens of that type known as reel ovens.In these the pans for holding the articles to be cooked are suspendedfrom a rotary head and at one point in-thei-r revolution come intoregistration with the opening in the oven wall so as to permit ofremoving the cooked product and replacing it by the uncooked. Thesereels are usually provided with a number of pans which are successivelybrought into registration with the opening in the oven wall by a seriesof intermittent movements. Heretofore it has been customary to turn thereel by hand which requires the attention of one workman, and moveovermust be carefully done in order that no sudden jar or vibration beimparted to the reel, which will result in causing the dough to fall.

It is the object of the present invention to provide power actuatedmechanism for moving the reel which is under complete control of theoperator and which is absolutely free from sudden jar or vibration, andstops auto matically.

To this end the invention consists in the construction as hereinafterdescribed and claimed.

In the drawings, Figure 1 is a sectional front elevation showing aportion of an oven and the actuating mechanism for the reel. Fig. 2 is aside elevation thereof, and Fig. 3 is a plan.

A is the oven and B is the supporting shaft for the reel (not shown)which projects outward from the side wall of the oven.

In order to give the required movement to the reel, the shaft B must berotated by a series of steps, each one of which will bring a pan intoregistration with the oven opening. In imparting the movement to theshaft it is necessary that it be gradually started and as graduallybrought to a stop in order that the inertia and momentum of the reel beover- Specification of Letters Patent.

Patented May 19, 1908.

Serial No. 91,994.

come without vibration. It is also desirable that the mechanism may beset into operation by a quick movement of the workman, and that itrequire no further attention from him so that his time may be otherwiseemployed. To accomplish these results we have devised an actuatingmechanism in which a series of step by step movements are imparted tothe shaft, each movement being of a harmonic character, that isbeginning very gradually, accelerating in speed and then as graduallydiminishing to an almost imperceptible stop. The movement is started bythe actuation of a trip, but stops automatically at the completion ofone step.

The specific mechanism preferably employed is of the followingconstruction: C is wheel secured to the shaft B outside of the ovenwall. This wheel is provided with a series of radial slots D, preferablyextending inward from the periphery. E is a radial head secured to ashaft F adjacent to the periphery of the wheel C. This head is providedwith a series of pins, or preferably antifriction rolls G projectingtherefrom and adapted to successively engage with the radial slots D ofthe wheel C. The arrange ment is such that when one of said rolls isentering one of the slots the one previously engaged is passing out ofits slot. The orbit through which the rolls pass is so arranged inrelation to the wheel C that the radial slots will be tangent thereto atthe point where the rolls enter and pass out of engagement. The resultwill be that if rotary movement is imparted to the head E harmonic stepby step movement will be transmitted to the wheel C.

The head E has preferably formed on its periphery a worm gear whichmeshes with a worm H upon the shaft I. This shaft has sleeved thereon apulley J which is connected by a belt or other suitable means with aconstant drive connection.

K is a clutch for coupling the pulley J with the shaft I.

L is an actuating member for the clutch K which is sleeved u on theshaft I and adapted when moved ongitudinally thereon towards the pulleyJ to spread the levers a of the clutch and couple it to the shaft. Thesleeve L is actuated by a forked rock arm M secured to the shaft Njournaled in bearings upon the base 0, which also preferably supportsthe other mechanism.

P is a rock arm sleeved upon the shaft N and having connected to itsfree end a link Q extending to a convenient position for actuating bythe workmen and provided with a suitable handle, such as b.

g is a spring for releasing the rock arm P.

R is a segment secured to an extension of the rock arm M and providedwith a notch c with which a dog S ivoted to a stationary I ment of thelatter being limited by engaging lugs m on the dog U and n on the dog Srespectively.

W is a rock arm on the shaft V connected by a linkX with a rock arm Ysleeved upon the shaft N and connected to the arm P.

0 and p are lugs respectively connected to the arm Y and the shaft N andextending into the paths of each other.

0 is a set screw in the lug 0 forming an ad justable stop for the lug p.

Z is a spring connected to the rock arm M or other convenient point andtending to throw the clutch K out of engagement.

With the parts constructed as described, whenever the handle I) is drawnoutward by the operator, the arm P will move the sleeve L upon the shaftI. This will cause said sleeve to spread the levers a and couple thepulley J to the shaft I. At the same time the movement of the shaft Nwill cause the rock arm Y to draw upon the link X and'rock the shaft Vthrough the rock arm W. This will cause the dog U to be withdrawn fromengagement with the radial slot in the Wheel The movement of the rockarm M will move the segment R outward until the notch c thereincomes inregistration with a hook or lug 01 upon the dog S and as the latter hasa limited movement upon the shaft V said lug d will drop into engagementwith the notch. To make the looking more positive a spring 6 bearing atone end against a lug f on the dog Uis arranged to press against the dogS to throw it into engagement. All of these movements which occursimultaneously upon the actuation of the handle I) will throw the partsinto position, where the shaft I is coupled to the pulley J the wheel Cis released by the dog U and the rock arm M is locked in a position tohold the clutch in engagement. Movement will then be imparted to therotary head E through the worm H and this will cause one of the rolls Gto move inward in a corresponding slot D while the other roll is movedout from its slot. As before described this movement will cause agradual starting of the wheel 0 which accelerates in sped until the rollG reaches its cen tral position, after which the movement is graduallyretarded until the roll is almost ready to pass out of engagement fromits slot. During this movement the rock arm P is held from beingreturned by the spring g, by reason of the engagement of the dog withthe periphery of the wheel C. As soon howeveras the roll G is in theosition to pass out of the slot the dog U Wil come into registrationwith another one of the slots D and on account of the tension of thespring 9 acting through the medium of the rock arm P, rock arm Y, linkX, rock arm W and shaft V will be thrown into engagement with said slot.Simultaneously the dog S will be dis engaged from the segment R beingactuated by the engagement of the lugs m and n. This will release thearm M and permit the spring Z to return it to its normal positionthereby releasing the clutch K. As soon as the clutch K is released thepulley J will no longer drive the shaft L, so that the movement of thewheel C will cease. In order, however, to prevent any further movementon account of the momentum of the arts a brake is preferably ap lied tothe sfiaft I. This consists of a whee or a disk It upon the shaft I,having a peri heral brake strap i therearound, one end 0 which isstationary and the other end secured to a link 9' connected to a rockarm k upon the shaft N. The result is that as soon as the shaft N isreturned to its initial position the brake will be applied which willring the mechanism to a stand.

What we claim as our invention is:

1. In a bakers oven having a rotatable carrier with a series of radiallyextending bearings thereon, antifriction members for successivelyslidingly engaging said .radial bearings to rotate said carrier, andauxiliary means operatively associated with said bearings for stoppingthe carrier as it is disengaged by saic antifriction members.

2. In a bakers oven having a carrier reel, the combination of anactuating mechanism therefor, comprising a wheel on the reel shafthaving a series of radially extending bearings thereon, anti-frictionmembers for successively slidingly engaging said radial bearings torotate said Wheel, and a dog adapted to engage one of said radiallyextending bear in s to stop the wheel as it is disengaged by saldantifrlction members.

3. In a bakers oven, having a carrier reel, the combination of anactuating mechanism therefor, comprising a wheel on the reel shafthaving a series of radially extending bearings thereof, a rotary drivemember having a series of pins for successively slidingly engaging saidradial bearings to rotate the wheel, a dog adapted to engage another ofsaid bearings, an means operable by the movement of saiddog forrendering said drive member inoperative.

4. In a bakers oven having a carrier, a Wheel on the shaft thereofhaving a plurality of radial bearin 's, a movable member arranged toslidably engage said bearings for imparting rotary movement to theWheel, and'supplemental means also engaging said bearings to stop theWheel.

In testimony whereof We aflix our signatures in presence of twoWitnesses.

ANTON MILL. ALEXANDER W. COPLAND. l/Vitnesses:

JOHN P. BARTH, PHILIP HAYWARD.

